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It’s not as common for Dutch elm disease to affect other types of trees, especially if the surrounding trees aren’t elms. However, it is possible for DED to spread to other trees, particularly in northern states, like Minnesota. In fact, it’s a good idea to use geography to identify wood and determine which types of trees are in your yard. 

Unfortunately, the complex and shallow root system of elm trees makes surrounding elm trees particularly vulnerable to DED. Early discovery is key!

Pruning trees is important for several reasons. It improves tree health and strength by removing dead, diseased, or unwanted branches, which in turn encourages new growth and can help treat disease. For fruit trees, proper pruning can lead to a larger and better-quality harvest. Pruning also enhances safety by removing weak limbs that could break and fall, potentially causing injury or property damage, especially during storms. Beyond these functional benefits, pruning can also improve a tree's appearance. To ensure pruning is done correctly for the tree's long-term health, consider hiring a professional.

There are two types of arborists: certified and consulting. A certified arborist is licensed and equipped to provide tree pruning, planting, fertilizing, monitoring, transplanting, treatment, and removal services. A consulting arborist specializes in tree appraisals, diagnosing problems and recommending treatments for illnesses. However, they will not provide these services themselves. Most consulting arborists are certified arborists who can refer you to a tree service that can administer the correct treatments.

Pruning can impact cold hardiness—but it’s less about the exact temperature and more about temperature variation. Generally, you don’t want to prune trees when there’s a risk of temperatures suddenly dropping from 50 to 60 degrees Fahrenheit to 0 degrees Fahrenheit or below. A tree is most sensitive until 48 hours after it’s pruned.